I own the original Ratchet and the Encore. I don't use the cardboard cut outs (that weren't around in G1, so either came in reissues or Encore) and am not interested in the third-party heads.
Maybe it's because I have had the Ratchet toy for 25 years now, but it does not bother me in the slightest. That's just how the toys look.
If you want something a bit more model-like, that's what the BotCon and Universe/Henkei toys are for.