
Originally Posted by
Voro
I'm returning after a very extended absence
Before anything else, Welcome Back!
A little late chiming in, and most(!) important points have been amply made, so I'll just toss out a few thoughts...

Originally Posted by
Voro
Stat line:
Str 15
Dex 15
Con 12
Int 12
Wis 8
Cha 15
(Question - is this a Drow? I'm not able to squeeze those starting stats out of a Human 1st-life toon... altho' a Drow doesn't quite work either... ) 
Either way - not sure how you were going to get "trapping" out of the Paladin Skill Points from 12 Int. However, you could swap to heavy-Rogue build (see bottom), and then Skill Points are no longer an issue (and the Pali levels still give good Saving Throws and some other bells and whistles).
Also, before moving on - know that it's MUCH easier today to level up than it was when you left. MUCH. XP rains down in comparison. Pretty easy to limp a non-optimal/gimped build like this up to 20 to TR, and then all problems disappear. Just sayin' it's not as bad as you might remember or expect, if that's all you're trying to do.* Normally I strongly suggest saving that for a true "OOPS!" moment during a build, but this might qualify - ymmv
However, considering the odd mix of pre-existing Feats, using the +0 Heart might be a better all-purpose solution.
(* If you're expecting to trap the hardest content, or farm tough chains for gear as you level up, or push on from 20 to 30 (NOT recommended), then you def want something most solid from word one.)

Originally Posted by
Voro
I have a Lesser Heart of Wood +0 & +20, but I'm not sure if I should burn them to do so.
I'd say DEFINITELY NOT the +20 - no reason to panic there just to get to 20, there are better uses for that down the road. And if you haven't run a Pale Master, it's not for everyone, so jumping to that may or may not be the solution you want.

Originally Posted by
Voro
I would like to keep a trapper character to go through the game solo first time. I've seen a solid Pale Trapper build, but I'm not sure if I'm locked out of that (can't change my lawful good with a lesser heart, right?).
Right, but you don't need to change from LG to go Pale Master. No alignment restrictions there.
So, using the +0 heart gets you the same starting class mix, but, as several suggestions above illustrate, that's far from a dealbreaker.
With or without that, other options might include...
o Rogue 16/Barb 1/Pali 3 mechanic - ranged fighting w a Great Crossbow*, innate Int-to-Damage, Sacred Defender = +31 PRR (++), "threat" generation doesn't affect Ranged combat; Barb increases run speed 10% for kiting. You lose Rogue 18 core enhancements, but those wouldn't come until Level 20 anyway, so enjoy all the faster leveling and ignore any (short-lived!) end-power bump that Rog 18 would give.
(* not the strongest ranged option currently, but still viable)
o Rogue 6/Ranger X/Pali Y: Ranged or 2-weapon. Rogue & Ranger levels increase skill points so you could squeak by, gives free feats. (Some examples above)
o You could also try ~something~ like this, a Repeat-adin https://forums.ddo.com/forums/showth...=1#post5618191 (older build, might take some tweaking)