It's not that bad in L-mount. We now have a small 40mm F/2 from TTartisan, but it could be better. Most of the lenses from Panasonic make a lot of sense- a full set of clinical 18, 24, 35, 50, 85, 100mm lenses at f/1.8 (except for the 100mm). They're the same size, rendering, in-camera corrections, usage and everything you'd expect. No other camera maker has that. The zooms are also great. Sure, no Tamron, but should that be the deal-breaker?
Personally, I'm no longer going for "clinical and sharp". Give me anything with character- that's what I want; set yourself apart a little. Clinical = boring in my book. Still, I have many of the primes, but I almost always take out the vintage stuff when shooting for myself (not a pro).
Also, mark my words, L mount will win in the end with lens selection.
What lenses are you after?