Any other benefits of taking Beta Ecdysterone besides the physical effects?

Honestly, beta-ecdysterone's most interesting effects are not muscle related, in my opinion. I think the fact that it is hitting the Mas receptor/angiotensin system is.

The Anti-Inflammatory Potential of ACE2/Angiotensin-\(1-7\)/Mas Receptor Axis: Evidence from Basic and Clinical Research

Emerging Evidence for a Functional Angiotensin-Converting Enzyme 2-Angiotensin-\(1-7\)-Mas Receptor Axis: More Than Regulation of Blood Pressure?

Mas Receptor Activation Contributes to the Improvement of Nitric Oxide Bioavailability and Vascular Remodeling During Chronic AT1R \(Angiotensin Type-1 Receptor\) Blockade in Experimental Hypertension

Activation of Ang-\(1-7\)/Mas Receptor Is a Possible Strategy to Treat Coronavirus \(SARS-CoV-2\) Infection

Role of Renin-Angiotensin System in Inflammation, Immunity and Aging

A Novel Angiotensin-\(1-7\) Glycosylated Mas Receptor Agonist for Treating Vascular Cognitive Impairment and Inflammation-Related Memory Dysfunction

Ang \(1-7\)/Mas receptor-axis activation promotes amyloid beta-induced altered mitochondrial bioenergetics in discrete brain regions of Alzheimer's disease-like rats

Angiotensin-Converting Enzyme 2/Angiotensin-\(1-7\)/Mas Receptor Axis: Emerging Pharmacological Target for Pulmonary Diseases

Angiotensin \(1–7\) and its receptor Mas are expressed in the human testis: implications for male infertility

The role of angiotensin-\(1–7\) receptor Mas in spermatogenesis in mice and rats

So we might be missing the forest for the trees here with focusing solely on muscle growth. Activation of the Mas receptor by beta-ecdyterone has a bunch of interesting beneficial effects on many organ systems of the body. Just like reducing Cistanche simply to its testosterone effects belittles how interesting of a plant it is, so does reducing beta-ecdysterone's effects to solely muscle mass modulation. Both plants are much more interesting than they look on the surface.