With the caveat that building and testing a good ship is also part of the learning curve costing credits, engineering mats, and time. It is good time spent because as the OP mentions it is a long road to get through the elite ranks.No currently exobiology is a single level activity, the only skill ladder is your ability to spot stuff and know where stuff is likely to be improves with practice.
In addition to my traditional exploration ships (DBX ad AspX) I created several dedicated fully engineered ships to test for exobiology:
1. Chieftain - great handling, felt great, good visibility,large landing footprint makes it not great.
2. Viper4 - All round excellent except frustrating visibility when looking at planet in orbit for bio sites. Also reduced visibility (but okay) when skimming planet surface.
3. Sidewinder - Small size is fantastic for landing. Tumbles uncontrollably if you touch planet surface. Cockpit canopy crossbar right in my line-of-site when looking for bio.
4. Eagle Mk2 - Best short range bio ship. All round excellent. Must be careful with small fuel tank.
5. DBX - Best long distance bio ship. Much more beefed up than a mini/maxed DBX exploration ship. With A-rated G5 thrusters, 4A shields, 3A distributer it has 64Ly jump range, great visibility, good handling, and fairly small landing footprint.
Certainly a cmdr could pick and equip any ship and use it for exobiology and just live with it. They can skip this learning curve. Or watch youtube videos and copy what someone else did.