we absolutly should have familiars.
But lets be clear, a familiar is not as much of an advantage as an animal companion. familiars offer small bonuses to their owners, and in some cases can get skill checks of their own - they are not capable combatants,
The best way to handle familiars for DDO is:
STAGE 1 add 2 extra feats:
1. familiar: you gain a familiar, go to the familiar trainer to claim it. (granted to wizards and sorcs at first lvl - basic choice of bat, cat, rat, dog. further options available via DDO store cosmetic pets.)
2. improved familiar: your familiar now has double the AP to spend on it and may be summoned as an amimal companion rather than as a cosmetic pet to assist you in combat.
STAGE 2 add familiar trainers to the game - or extra dialogue to wiz/sorc trainers.
familiars get 1 ap per character level.
enhancements include -
skills - each done seperately (grants skill bonues to owner and familiar+1 to +3) 2/4/6 ap
saves - each done seperately (grants save bonus to owner and familiar+ 1 to +3) 2/4/6 ap
tricks (grants your familiar party tricks - like cosmetic pets) 1 ap each
unlock skill (grants a skill to the owner, and to improved familiars. - they may perform this skill and are considered to have ranks equal to 1/2 their total character level) cost 10 ap.
(improved familiars only) evasion/improved evasion - your improved familiar gains evasion/improved evasion - 4/6 ap.
(improved familiars only) new form: select from a list of bigger animals/magical beasts. your improved familiar gains this combat oriented form. - 0 ap.
(improved familiars only) threat reduction stance. 1/2/3 ap. for -20, -40, -80% threat. + diplo clicky
(improved familiars only) threat increase stance. 1/2/3 ap. for +20, +40, +80% threat. + intim clicky.
STAGE 3: Your familiar should grant these bonuses even if it is not visable - we assume it is hiding in your pack. Familiars should be summoned/dismissed from the cosmetic pet Tab in the inventory pannel. When summoned a non improved familiar should be imprevious to harm - just like a cosmetic pet.
Improved familiars should be treated in all ways like animal companions. The passive skill and save bonuses should be considered training from the familiar and should still apply to the owner in the familiars absense.
A character that has access to any of the folowing should be able to summon them all at the same time and each should have a seperate hireling bar.
1. animal companion
2. improved familar
3. iron defender/homunculi.
id also suggest:
animal companions/iron defenders and imp familiars levels be based of total character level rather than class levels - to encourage multiclassing. the pets are harldy overpowered